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Describe how the diffusion of ions across a cell membrane differs from the diffusion of nonpolar molecules across the cell membrane?
Wiki User
∙ 9y ago
Ions need to be facilitated through a cell membrane because they are passing through a phospholipid bilayer with a hydrophobic interior. Non polar molecules are also hydrophobic, so they can pass through the membrane easily if they are small enough. Ions are polar, so they have a hard time passing through membranes.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoIons need to be facilitated through a cell membrane because they are passing through a phospholipid bilayer with a hydrophobic interior. Non-polar molecules are also hydrophobic, so they can pass through the membrane easily if they are small enough. Ions are polar, so they have a hard time passing through membranes.
Wiki User
∙ 11y agowalking
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The process where a nonpolar molecule can just passively get across a membrane is called?
facilitated diffusion
Diffusion of nonpolar molecules would not be affected by?
Diffusion of nonpolar molecules would not be affected by charge. Allosteric inhibition is generally a result of binding regulatory molecule at a site other than the active site.
The interior of the lipid bilayer of a cell membrane forms a nonpolar zone that?
A nonpolar zone is formed in the interior portion of a cell membrane. This zone has the ability to prevent large molecules and ions from entering through the membrane.
Why did detergent disrupt the bacterial cell membrane but not destry our skin cell?
I guess that is because bacterial membrane has different phospholipids, phospatidyl ethanolamine while we have phosphatidyl choline. I don't think all detergent can disrupt the bacterial membrane, but antibacterial soap.
What is diffusion in biology?
Diffusion is the process that occurs when a certain concentrated volume of material moves to a less concentrated state. Facilitated diffusion is different and is done with the help of pumps actively transporting materials across the cell membrane to create the equilibrium on both sides of the membrane. ža specific type of passive transport žthe movement of particles from an area of high concentration to an area of low concentration ždissolved particles that are small or nonpolar can diffuse through the cell membrane ždiffusion is used to reach equilibrium –equilibrium: a condition in which the concentration of a substance is equal throughout a space
What kind of molecules can move across the membrane For simple diffusion?
Passive transport is dependent on the permeability of the cell membrane, which, in turn, is dependent on the organization and characteristics of the membrane lipids and proteins. The four main kinds of passive transport are diffusion, facilitated diffusion, filtration and osmosis.Simple diffusion is the unassisted passage of small, hydrophobic, nonpolar molecules.
The process where a nonpolar molecule can just passively get across a membrane is called?
facilitated diffusion
Which molecules difuse through the lipid portion of the plasma membrane?
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through the membrane.
Diffusion of nonpolar molecules would not be affected by?
Diffusion of nonpolar molecules would not be affected by charge. Allosteric inhibition is generally a result of binding regulatory molecule at a site other than the active site.
Describe the polarity of alkane molecules?
Alkane molecules are nonpolar.
What is a diffused molecule from a semipermeable membrane?
What is the situation? Provided a concentration gradient and a molecule that passes through a membrane, diffusion will happen. Generally small and nonpolar molecules will pass through a membrane down a concentration gradient. That doesn't answer your question but it may be the answer your looking for.
What assists the movement of polar molecules across the membrane A. Passive Transport B. Active Transport?
Polar molecules must pass through the membrane via active transport. This is because the cellular membrane is mostly nonpolar, and polar and nonpolar molecules repel each other. Only nonpolar molecule (i.e. hormones) can pass through the membrane without active transportation.
Why do oxygen molecules easily diffuse across a cell membrane while glucose molecules do not?
Oxygen molecules are small and nonpolar, which allows them to easily pass through the hydrophobic lipid bilayer of the cell membrane via simple diffusion. Glucose molecules, on the other hand, are larger and polar, making it more difficult for them to move through the nonpolar interior of the lipid bilayer. They require specific transport proteins or channels to facilitate their movement across the membrane.
The interior of the lipid bilayer of a cell membrane forms a nonpolar zone that?
A nonpolar zone is formed in the interior portion of a cell membrane. This zone has the ability to prevent large molecules and ions from entering through the membrane.
What goes through the cell membrane?
Nonpolar molecules (example: lipids) Small polar molecules such as water
How does the structure of phospholipids linear molecules with a polar end and a nonpolar end relate to their function in the cell membrane?
Which is the effect of having the polar and nonpolar ends of phospholipid molecules oriented as they are in this illustration?
Given that a nonpolar substance is more concentrated outside of a cell how does it get across a cell's plasma membrane without the expenditure of energy?
Osmosis and diffusion.
